/Engine/Source/Runtime/Engine/Classes/EditorFramework/AssetImportData.h
If your asset import data flavor need to add some asset registry tag, override this function.
virtual void AppendAssetRegistryTags ( [TArray](API\Runtime\Core\Containers\TArray)< [FAssetRegistryTag](API\Runtime\CoreUObject\UObject\UObject\FAssetRegistryTag) > & OutTags )